package Array;
public class Array {
public static void main(String args[]) {
    int a1[] = new int [10];
    int a2[] = {1, 2, 3, 4, 5};
    int a3[] = {4, 3, 2, 1};
    System.out.println("length of a1 is " + a1.length); //10
    System.out.println("length of a2 is " + a2.length); //5
    System.out.println("length of a3 is " + a3.length); //4
}}